Class: Scruffy::Formatters::Number

Inherits:
Base
  • Object
show all
Defined in:
lib/scruffy/formatters.rb

Overview

Default number formatter. Limits precision, beautifies numbers.

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Base

#route_format

Constructor Details

#initialize(options = {}) ⇒ Number

Returns a new Number formatter.

Options:

precision

precision to use for value. Can be set to an integer, :none or :auto. :auto will use whatever precision is necessary to portray all the numerical information, up to :precision_limit.

Example: [100.1, 100.44, 200.323] will result in [100.100, 100.440, 200.323]

separator

decimal separator. Defaults to ‘.’

delimiter

delimiter character. Defaults to ‘,’

precision_limit

upper limit for auto precision.



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# File 'lib/scruffy/formatters.rb', line 85

def initialize(options = {})
  @precision        = options[:precision] || :none
  @separator        = options[:separator] || '.'
  @delimiter        = options[:delimiter] || ','
  @precision_limit  = options[:precision_limit] || 4
end

Instance Attribute Details

#delimiter ⇒ Object

Returns the value of attribute delimiter.



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# File 'lib/scruffy/formatters.rb', line 71

def delimiter
  @delimiter
end

#precision ⇒ Object

Returns the value of attribute precision.



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# File 'lib/scruffy/formatters.rb', line 71

def precision
  @precision
end

#precision_limit ⇒ Object

Returns the value of attribute precision_limit.



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# File 'lib/scruffy/formatters.rb', line 71

def precision_limit
  @precision_limit
end

#separator ⇒ Object

Returns the value of attribute separator.



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# File 'lib/scruffy/formatters.rb', line 71

def separator
  @separator
end

Instance Method Details

#format(target, idx, options) ⇒ Object

Formats the value.



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# File 'lib/scruffy/formatters.rb', line 93

def format(target, idx, options)
  my_precision = @precision
  
  if @precision == :auto
    my_precision = options[:all_values].inject(0) do |highest, current|
      cur = current.to_f.to_s.split(".").last.size
      cur > highest ? cur : highest
    end
  
    my_precision = @precision_limit if my_precision > @precision_limit
  elsif @precision == :none
    my_precision = 0
  end
  
  my_separator = @separator
  my_separator = "" unless my_precision > 0
  begin
    parts = number_with_precision(target, my_precision).split('.')
    
    number = parts[0].to_s.gsub(/(\d)(?=(\d\d\d)+(?!\d))/, "\\1#{@delimiter}") + my_separator + parts[1].to_s
    number
  rescue StandardError => e
    target
  end
end